COLEOPTERA 



227 



on the ventral aspect of the claws which is so characteristic of the 

 former. 



The life-history of these beetles is very complicated, and much 

 of it is spent under the ground, hence the seasonal factor in the 

 eruption caused by cantharidin, which is present in the fluid 

 exuding from the insect, and especially from what may be termed 

 the knee-joint, when irritated. 



Fig. 26. — Blister Beetles. 



I, Upper and smaller Epicauta tomentosa Maeklin, 1845, and the lower and 

 larger Epicauta sapphirina Maeklin, 1845; 2, Mylabvis nubica de Marseul, 

 ^^57 \ 2>- 3- claw of E. sapphirina, to show the long appendage which is usually 

 closely applied to it. 



MOLLUSCA. 



A venomous snail of unknown genus and species is described 

 in the Solomon Islands. These snails possess radulse provided 

 with pointed tubular teeth, armed anteriorly with a barb. These 

 teeth are connected with a poison gland, and are capable of injuring 

 men and producing severe wounds. Bites of the cones and augers 

 (Terebridse) are said to be poisonous. 



REFERENCES. 



The best general references are : 



Calmette (1907). Les Venins. Paris. 



Faust (1906). Die tierischen Gifte. Braunschweig. 



Wells (1907). Chemical Pathology, pp. 181, 182. 



Protozoa. 



Laveran and Mesnil (1899). Compt. Rendus Soc. Biol., xi. 245-248. Paris. 

 Rosenau, Parker, Francis, and Bayer (1904). Bull. 14, Yellow Fever 

 Institute. Put>lic Health and Mar. Hospital Serv. Washington. 



